Physics Class 12th Chapter15 COMMUNICATION SYSTEM VVI Objective Question
Q.1. Sky wave communication is based upon (A) reflection by ionosphere (B) absorption by ionosphere (C) transmission through ionosphere (D) None of these Ans :- (A) Q.2. The process opposite to modulation is (A) demodulation (B) transmission (C) remote sensing (D) fax Ans :- (A) Q.3. A net work within an institution is known as …
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